West bank of St. Mary River, Blood Tribe reserve lands (Cretaceous of Canada)

Also known as TMP 2002.400.0001; Prognathodon overtoni referred specimens

Where: Alberta, Canada (49.7° N, 112.8° W: paleocoordinates 57.4° N, 78.2° W)

• coordinate based on nearby landmark

When: Bearpaw Shale Formation, Late/Upper Campanian (83.5 - 70.6 Ma)

• 15 m above the base of the Formation; likely that the age of the two mosasaurs is no younger than 74 Ma

• bed-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Reposited in the TMP

Primary reference: T. Konishi, D. Brinkman, J. A. Massare and M. W. Caldwell. 2011. New exceptional specimens of Prognathodon overtoni (Squamata, Mosasauridae) from the upper Campanian of Alberta, Canada, and the systematics and ecology of the genus. Journal of Vertebrate Paleontology 31(5):1026-1046 [P. Mannion/P. Mannion/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 119089: authorized by Philip Mannion, entered by Philip Mannion on 20.10.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Squamata - Mosasauridae
Prognathodon overtoni Williston 1897 mosasaur
TMP 2002.400.0001 (nearly complete skull and largely articulated postcranium, with one incomplete scapula, associated front paddle elements, semiarticulated pelvic girdle, articulated proximal left hind paddle, and articulated, nearly complete right hind paddle)